Smoke and spark destroyer.



G. Z. GRAY. SMOKE AND SPARK DESTROYER.

APPLBIATION FILED APR. 17. 1908. 91 1 ,8-17, Patented Feb. 9, 1909.

m o Q fi o W H o U o o v w o I. .W

v Atlor ney THE NORRIS PETERS C0 WASHINGTON, D- C4 GEORGE Z. GRAY, OFHARRISBURG, PENNSYLVANIA.

SMOKE AND SPARK DESTROYER.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Application filed April 1'7, 1908. Serial No. 427,643.

To all whom it may concern:

Be it known that I, GEORGE Z. GRAY, a citizen of the United States,residing at Harrisburg, in the county of Dauphin and State ofPennsylvania, have invented certain new and useful Improvements in Smokeand Spark Destroyers, of which the following is a specification.

My invention relates to smoke and spark preventers, and moreparticularly to that class of preventers used in connection withlocomotives of the extended smoke-box type, and the object thereof is toprovide a novel smoke and spark preventing mixture, together with asimple and inexpensive, yet highly efficient apparatus for withdrawingthe components thereof from their respective sources and conveying thesame to 'a point adjacent the point of exit, in such manner that eitherof the said components'may be employed independent of the other, or bothmay be employed and thoroughly mixed during their conveyance.

Further objects and advantages of my present invention will appear inthe course of the following description, in which reference is made tothe accompanying drawing, forming a part of this specification, in whichlike numerals are used to designate like parts throughout the severalfigures, and in which,

Figure 1 is a side elevation of a locomotive provided with my improvedapparatus, and partly broken away. to show one of the sources of sup 1y.Fig. 2 is a transverse vertical sectional view taken through theforwardly extending smoke-box of a locomotive, and centrally through thesmoke-stack leading therefrom. Fig. 3 is a fragmentary centrallongitudinal sectional view, on an enlarged scale, taken through thespraying nozzle and a portion ofthe discharge pipe to which the same isconnected.

In the practical embodiment of my invention, I provide an apparatus forwithdrawing, conveying, mixing, and discharging a mixture of steam andhot water from the rear of the locomotive to the forward extensionthereof, and spraying the same within cent the water line thereof, torespectively convey dry steam, and steam and water therefrom, the saidlocomotive being of that type which are provided with a forwardlyextending smoke-box B having afixed frustoconical netting C, therein.The branch pipes 5 and 6, leading from the steam boiler b, 0 en into anelongated conveying pipe 7, lea ing from the cab of the locomotivewlthin its forwardly extending smoke-box B, and said branch pipes 5 and6 are provided with regulating valves 8, located within said locomotivecab to be under direct control of the engine men. It will thus be seenthat either dry steam or steam and hot water, from the boiler b, may beindependently employed by shutting off the valve 8 of one of the pipes 5and 6, or they may both be employed and conveyed through the pipe 7,which is necessarily of such length that the said steam and hot waterwill become thoroughly mixed by the time they reach the extendedsmoke-box B. The forward end of the conveying pipe 7, extends within thesmoke-box B, through the boiler saddle 0, being locked therethrough bynuts 9 and an opening within said smokebox into branch discharge pipes10, said pipes 10 at their connection with the conveying pipe 7, havinga triangular internal knifeedged projection 1 1 mounted with itsknifeedge extending toward and within the conveying pipe 7, whichprojection 11 is provided in order that the mixture will be more quicklydivided into the discharge pipes 10, and in order that the said mixturemay not be prematurely condensed or otherwise harmed by impingingagainst a resisting surface Each of the pipes 10, is provided withexternal threaded discharge ends projecting through the frusto-conicalshaped netting C and oppositely through the inclined sides thereof, saidthreaded projecting ends of said pipes 10 being adapted for thereception of spraying nozzles 11, comprising enlarged tubular portionshaving flanged threaded ca s 12 secured upon the ends thereof, said onarged tubular portions and said caps being provided with minute openings13, through which the mixture is sprayed. The said nozzles are referablymounted u on a converging ang e, in order to spray t e mixture towardand within'the internal mouth D of .the smoke-stack, leading from theextended smoke-box B. The discharge pipes 10, are further provided upontheir threaded ends, below their nozzles 11, and below the netting O,with nuts 14 adapted to be screwed up- Wardly thereon against the saidnetting C, to securely lock tne pipes 10 and their nozzles 11tnerethrough.

From the foregoing it Will be understood th at the steam and Water frompipe 6 are employed to prevent hot sparks, and dry steam from pipe 5 isemployed to prevent smoke.

Having fully described my invention, I claim:

In a smoke and hot spark preventing apparatus of the characterdescribed, the com ination with a locomotive provided with a forwardlyextended smoke boX, having a frustoconical frame of foraminous materialfixed therein below the mouth of its smoke stack, of a conveying andmixing pipe eX- tending a major portion of the lengtn of saidlocomotive, a dry steam pipe and a steam and hot Water pipe leading intothe rear end of said conveying pipes from the rear boiler end of saidlocomotive, regulating valves Within each of said boiler pipes, branchdischarge pipes leading from the forward end of said conveying pipe andproiccting angularly through opposite sides of said foraminous frame,perforated. nozzles threadedly engaged upon the upper projecting ends ofsaid discharge pipes above said. foraminous frame, and am nutsthreadedly engaged, upon said discharge pipes, below and against saidforaminous frame to lock said nozzles and said discharge pipestheretiu'ough, substantially as described.

In testimony whereof I aflix my signature in presence of two Witnesses.

GEORGE Z. Gil-LAY.

Witnesses SUE G. LANms, MARY BENDER.

